Children who go out trick-or-treating are being asked not to visit houses displaying the posters.

A force spokesman said: "What starts off initially as fun sometimes turns into crime and anti-social behaviour."

The posters are available to download from the Wiltshire Police website or can be collected from police stations.

The spokesman added: "We ask that people consider the feelings of others this Halloween and appeal to parents to ensure their children behave in a sensible way.

"We hope that youngsters will respect these posters and will not stop at homes displaying them," he said.

Click here to download the poster (576kB). You will need Adobe Acrobat on your computer to display this.